Umbrella



FIG. 1 is a first perspective view of an umbrella showing my new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a third perspective view thereof;

FIG. 4 is a fourth perspective view thereof;

FIG. 5 is a fifth perspective view thereof;

FIG. 6 is a sixth perspective view thereof;

FIG. 7 is a front view thereof;

FIG. 8 is a rear view thereof; and,

FIG. 9 is a left side view thereof (the right side view being a mirrorimage thereof).

The broken lines depict portions of the article that form no part of theclaimed design.

CLAIM The ornamental design for an umbrella, as shown and described.